Created attachment 610303 [details]
Xorg.0.log from 'Option "AccelMethod" "UXA"' not in xorg.conf

2.99.916 (current) is broken in X11:Xorg and Factory repos
git3.0.0 had the fix commit 12 September
https://bugs.freedesktop.org/show_bug.cgi?id=85016#c1 explains commit

Summary of brokenness is that valid xorg.conf* that starts X as expected with
radeon and nouveau is ignored by Intel driver. 2.99.916 requires explicit
driver specification (e.g. uncomment intel driver line in the following
xorg.conf), AND non-default AccelMethod UXA (at least for gfxchips at least as
new as 4000 series), resulting in Intel gfxchips limited to 1024x768, ignoring
EDID preferred, if any otherwise valid manual configuration exists, and if no
manual configuration exists, except via xrandr:

Section "Device"
    Identifier    "Default Device"
#    Driver        "intel"
#    Driver        "nouveau"
#    Driver        "radeon"
#    Option        "AccelMethod"    "UXA"
EndSection
Section "Monitor"
    Identifier    "Default Monitor"
    HorizSync    30-115
    VertRefresh    56-86
    DisplaySize    338 253 # 120 DPI @ 1600x1200
    Option        "PreferredMode" "1600x1200"
EndSection
Section "Screen"
    Identifier    "Default Screen"
    Device        "Default Device"
    Monitor        "Default Monitor"
EndSection
Section "Extensions"
        Option        "Composite"    "Disable"
EndSection

More background info on mailing list:
http://lists.opensuse.org/opensuse-xorg/2014-10/msg00000.html